Alumina Ceramic Roller Manufacturing Process

Time:2018/5/21 17:20:48 Click on:

There are actually many ways to make alumina ceramic roller. Examples include dry pressing, grouting, extrusion, cold isostatic pressing, injection, and casting, hot pressing, and hot isostatic pressing that we commonly see. In recent years, there have been many new methods for forming alumina ceramic products, such as pressure filtration molding, direct solidification injection molding, and gel injection molding.

Next, let's briefly describe some molding instructions for alumina ceramic roller:

The first is dry compression molding. Here we may talk about the limitations of its technology. It is limited to articles that are simple in shape and have an inner wall thickness of more than 1 mm, and also have a length and diameter that require a ratio of less than 4:1. There is a uniaxial or bidirectional molding method. Presses are also available in hydraulic and mechanical forms, and can be semi-automatic or fully automatic.

There is pressure within 200Mpa. At this time we can see that the output can reach 15 to 50 pieces per minute. Of course, we must pay attention to the size of the pressure or the amount of powder filling will also affect the quality of alumina ceramic roller. Therefore, it is necessary to accurately ensure uniform distribution of the powder particles in the dry pressing process so as to achieve the best pressure forming effect.

Followed by the first use of alumina ceramic molding method, that is, injection molding. Since this method uses a plaster mold, it has such components as low cost, convenience for molding large dimensions, complex shapes, and the like. It should also be noted here that the most critical factor in grouting is the preparation of alumina slurries.

Generally speaking, when we are making alumina ceramic roller, we use water as the flux medium in most cases, then add the debonding agent and binder to it, wait until we have fully ground it in the exhaust, and finally pour into the plaster mold. Inside. At this time, we also need to pay attention to the hollow ceramic grouting when it comes to alumina ceramic roller. In addition, we use high-concentration pulp as much as possible in order to reduce the shrinkage of the green body.

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